Appeal No. 2001-0934 Page 3
Application No. 09/294,483
in which Hal is halogen.
The references relied upon by the examiner are:
Iqbal et al. (Iqbal) 4,490,542 Dec. 25, 1984
Pfenninger et al. (Pfenninger) 4,778,899 Oct. 18, 1988
(March), ADVANCED ORGANIC CHEMISTRY: REACTIONS, MECHANISMS, AND
STRUCTURE, pp. 360, 589 and 590 (Jerry March ed., Third Ed., John Wiley
& Sons) (1985)
GROUND OF REJECTION
Claims 1-7 stand rejected under 35 U.S.C. § 103 as being unpatentable
over Iqbal in view of March and Pfenninger.
We reverse.
DISCUSSION
According to the examiner (Answer, page 4), Iqbal “teach a process for
preparing alkylthio- and/or arylthio-substituted diketo-diaryl-pyrrolopyrrole …
similar to the process instantly claimed.” In addition, the examiner finds (id.),
Iqbal “indicate that the substitutents on the phenyl ring can be subsequently
introduced or obtained by conversion of other substitutents, such as halogens
[however, Iqbal] do[es] not stipulate the use of thiol or thiolate in the conversion
process.”
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